<template>
	<view class="tki-tree" @touchmove.stop="" style="z-index: 999;">
		<view class="tki-tree-mask" :class="{ show: showTree }" @tap="_cancel"></view>
		<view class="tki-tree-cnt" :class="{ show: showTree }">
			<view class="tki-tree-bar">
				<view class="tki-tree-bar-cancel" :style="{ color: cancelColor }" hover-class="hover-c" @tap="_cancel">取消</view>
				<view class="tki-tree-bar-title" :style="{ color: titleColor }">{{ title }}</view>
				<view class="tki-tree-bar-confirm" :style="{ color: confirmColor }" hover-class="hover-c" @tap="_confirm">确定</view>
			</view>
			<view class="cu-bar search bg-white">
				<view class="search-form round">
					<text class="cuIcon-search"></text>
					<input v-model="searchText" :adjust-position="false" type="text" placeholder="请输入内容" confirm-type="search"></input>
				</view>
				
				<view class="action">
					<button class="cu-btn bg-green shadow-blur round" @tap="searchList">搜索</button>
				</view>
			</view>
			<view class="tki-tree-view">
				<scroll-view class="tki-tree-view-sc" :scroll-y="true">
					<block v-for="(item, index) in treeList" :key="index">
						<view
							class="tki-tree-item"
							:style="[
								{
									paddingLeft: item.rank * 15 + 'px',
									zIndex: item.rank * -1 + 50
								}
							]"
							:class="{
								border: border === true,
								show: item.show,
								last: item.lastRank,
								showchild: item.showChild
							}"
						>
							<view class="tki-tree-label" @tap.stop="_treeItemTap(item, index)">
								<image class="tki-tree-icon" :src="item.lastRank ? lastIcon : item.showChild ? currentIcon : defaultIcon"></image>
								{{ item.name }}
							</view>
							<view class="tki-tree-check" @tap.stop="_treeItemSelect(item, index)" v-if="selectParent ? true : item.lastRank">
								<view class="tki-tree-check-yes" v-if="item.checked" :class="{ radio: !multiple }" :style="{ 'border-color': confirmColor }">
									<view class="tki-tree-check-yes-b" :style="{ 'background-color': confirmColor }"></view>
								</view>
								<view class="tki-tree-check-no" v-else :class="{ radio: !multiple }" :style="{ 'border-color': confirmColor }"></view>
							</view>
						</view>
					</block>
				</scroll-view>
			</view>
		</view>
	</view>
</template>

<script>
import { mapState, mapActions } from 'vuex';
export default {
	name: 'tki-tree',
	props: {
		range: {
			type: Array,
			default: function() {
				return [];
			}
		},
		rangeKey: {
			type: String,
			default: 'label'
		},
		type: {
			type: String,
			default: ''
		},
		url: {
			type: String,
			default: ''
		},
		title: {
			type: String,
			default: ''
		},
		multiple: {
			// 是否可以多选
			type: Boolean,
			default: false
			// default: true
		},
		selectParent: {
			//是否可以选父级
			type: Boolean,
			default: false
		},
		confirmColor: {
			// 确定按钮颜色
			type: String,
			default: '#f5a200' // #07bb07
		},
		cancelColor: {
			// 取消按钮颜色
			type: String,
			default: '' // #757575
		},
		titleColor: {
			// 标题颜色
			type: String,
			default: '#f5a200' // #757575
		},
		currentIcon: {
			// 展开时候的ic
			type: String,
			default:
				''
		},
		defaultIcon: {
			// 折叠时候的ic
			type: String,
			default:
				''
		},
		lastIcon: {
			// 没有子集的ic
			type: String,
			default: ''
		},
		border: {
			// 是否有分割线
			type: Boolean,
			default: false
		}
	},
	data() {
		return {
			showTree: false,
			treeList: [],
			selectIndex: -1,
			myData:[],
			searchText:""
		};
	},
	computed: {},
	methods: {
		...mapActions(["JAjax"]),
		_show() {
			this.showTree = true;
			if(this.treeList.length == 0){
				
				this.getDictValue();
			}
		},
		_hide() {
			this.showTree = false;
		},
		_cancel() {
			this._hide();
			this.$emit('cancel', '');
		},
		getAllSub(allData, myData) {
			myData.forEach((value, key) => {
				allData.forEach((v, k) => {
					if (value.id == v.pId) {
						value.children == undefined ? (value.children = []) : '';
						var obj = {};
						obj.label = v.name;
						obj.id = v.id;
						obj.pId = v.pId;
						value.children.push(obj);
					}
				});
				if (value.children && value.children.length > 0) {
					this.getAllSub(allData, value.children);
				}
			});
		},
		getDictValue() {
			uni.showLoading({
				title: '加载中',
				icon: 'none'
			});
			this.JAjax({
				url: this.url.indexOf("?") == -1 ? this.url + "?" : this.url,
				success: data => {
					let result = data.data;
					result.forEach((value, key) => {
						if (value.pId == '0') {
							var obj = {};
							obj.label = value.name;
							obj.id = value.id;
							obj.pId = value.pId;
							this.myData.push(obj);
						}
					});
					this.getAllSub(result, this.myData);
					this._renderTreeList(this.myData);
					uni.hideLoading();
				}
			});
			// uni.request({
			// 	url: this.HOST_URL + '/a/sys/dictData/listData?dictType=' + this.dict + '&t=' + new Date().getTime() + '&__sid=' +
			// 		this.sessionId,
			// 	success: (data) => {
			// 		if (data.statusCode == 200 && data.data) {
			// 			this.picker = []
			// 			for (var i = 0; i < data.data.length; i++) {
			// 				this.picker.push(data.data[i].dictLabel)
			// 				this.pickerValue.push(data.data[i].dictValue)
			// 			}
			// 		}
			// 	},
			// 	fail: (data, code) => {

			// 	},
			// })
		},
		_confirm() {
			// 处理所选数据
			let rt = [],
				obj = {};
			this.treeList.forEach((v, i) => {
				if (this.treeList[i].checked) {
					obj = {};
					obj.parents = this.treeList[i].parents;
					obj = Object.assign(obj, this.treeList[i].source);
					// 移除子元素
					delete obj.children;
					rt.push(obj);
				}
			});
			this._hide();
			this.$parent.treeselectCallback(this.type, rt);
		},
		//扁平化树结构
		_renderTreeList(list = [], rank = 0, parentId = [], parents = []) {
			list.forEach(item => {
				this.treeList.push({
					id: item.id,
					name: item[this.rangeKey],
					source: item,
					parentId, // 父级id数组
					parents, // 父级id数组
					rank, // 层级
					showChild: false, //子级是否显示
					show: rank === 0, // 自身是否显示
					checked: false
				});
				if (Array.isArray(item.children) && item.children.length > 0) {
					// console.log(item)
					let parentid = [...parentId],
						parentArr = [...parents];
					delete parentArr.children;
					parentid.push(item.id);
					parentArr.push({ id: item.id, [this.rangeKey]: item[this.rangeKey] });
					this._renderTreeList(item.children, rank + 1, parentid, parentArr);
				} else {
					this.treeList[this.treeList.length - 1].lastRank = true;
				}
			});
		},
		// 点击
		_treeItemTap(item, index) {
			if (item.lastRank === true) {
				//点击最后一级时触发事件
				this.treeList[index].checked = !this.treeList[index].checked;
				this._fixMultiple(index);
				return;
			}
			let list = this.treeList;
			let id = item.id;
			item.showChild = !item.showChild;
			list.forEach((childItem, i) => {
				if (item.showChild === false) {
					//隐藏所有子级
					if (!childItem.parentId.includes(id)) {
						return;
					}
					if (childItem.lastRank !== true) {
						childItem.showChild = false;
					}
					childItem.show = false;
				} else {
					if (childItem.parentId[childItem.parentId.length - 1] === id) {
						childItem.show = true;
					}
				}
			});
			// console.log(this.treeList)
		},
		_treeItemSelect(item, index) {
			this.treeList[index].checked = !this.treeList[index].checked;
			this._fixMultiple(index);
		},
		// 处理单选多选
		_fixMultiple(index) {
			if (!this.multiple) {
				// 如果是单选
				this.treeList.forEach((v, i) => {
					if (i != index) {
						this.treeList[i].checked = false;
					}
				});
			}
		},
		// 重置数据
		_reTreeList() {
			this.treeList.forEach((v, i) => {
				this.treeList[i].checked = false;
			});
		}
	},
	watch: {
		range(list) {
			this._renderTreeList(list);
		},
		multiple() {
			if (this.range.length) {
				this._reTreeList();
			}
		},
		selectParent() {
			if (this.range.length) {
				this._reTreeList();
			}
		}
	},
	mounted() {
	}
};
</script>
<style>
@import 'style.css';
</style>
